SPOT Natural-Color Simulation with Spectrum Analysis

Traditional linear models for generation SPOT natural-color is difficult to produce highly realistic natural-color SPOT image because of its simplified description of the relationship between the image bands.To overcome this problem,we propose a new SPOT natural-color simulation method based on spectrum analysis.Firstly,we take the image's spectrum as a reference to adjust spectrum library's spectrum scales and form some spectrum bands.Then,we use the back-propagation artificial neural network(BP ANN) to study and analyze the relationship between spectrum-library's blue band and other bands.Finally,we take this relationship into the simulation of SPOT blue band and generate the natural-color images.Experiment show that the natural-color image is much more excellent in both visual effects and spectrum information than others.